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[U-Boot,V2,REPOST,9/9] dts/Makefile: pass -undef -D__DTS__ to cpp

Message ID 1374685764-4828-10-git-send-email-swarren@wwwdotorg.org
State Accepted
Delegated to: Tom Rini
Headers show

Commit Message

Stephen Warren July 24, 2013, 5:09 p.m. UTC 
From: Stephen Warren <swarren@nvidia.com>

This brings U-Boot's cpp invocation into line with the way the Linux
kernel invokes cpp on device trees. Consistency will be useful to ensure
*.dts is portable between the two.

-undef also has the added advantage of not defining "linux", so DT
property names such as "linux,keymap" don't get mangled.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
---
 dts/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/dts/Makefile b/dts/Makefile
index 805d2cc..b125bd3 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -37,7 +37,7 @@  DTS_INCDIRS =  $(SRCTREE)/board/$(VENDOR)/$(BOARD)/dts
 DTS_INCDIRS += $(SRCTREE)/board/$(VENDOR)/dts
 DTS_INCDIRS += $(SRCTREE)/arch/$(ARCH)/dts
 
-DTS_CPPFLAGS := -x assembler-with-cpp \
+DTS_CPPFLAGS := -x assembler-with-cpp -undef -D__DTS__ \
 		-nostdinc $(addprefix -I,$(DTS_INCDIRS))
 
 DTC_FLAGS := -R 4 -p 0x1000 \